Typographical casting-machine.



W. M. WOOD.

TYPOGRAPHICAL CASTING MACHINE.

APPLICATION FILED JUNE 5, 19 13.

Lwz m o Patented July 7, 1914.

E. H I

5] MA)? Mioz WILLIAM MILNER WOOD, OF NEW YORK, Y., ASSIGNOR T0MERGENTHALER LINOTYIPE COMPANY, A CORPORATIDN OF NEW YORK.

TYPOGRAPHICAL CASTING-MACHINE.

Specification of Letters latent.

Patented July Z, ilgllet.

Application filed June 5, 1913. Serial No. 771,786.

To all whom it may concern Be it known that I, WVILLIAM MILNER Wool), acitizen of th United States, rcsiding at New York, in the county of NewYork and State of New York, have invented certain new and usefulImprovements in 'lypographical Castin -Machines, of which the followingis a specification, reference being had therein to the accompanyingdrawmg.

casting machines, such for instance as linotype machines of the generalcharacter disclosed in Letters Patent of the United States to 0.lslergenthaler, No. 436,532, wherein an assembled line of matrices ispresented temporarily v to one side of a 'slotted mold, and molten metalis then forced into the mold from a pot by a suitable pump or plunger,all in the manner well known in the art. The solid type metal isdeliyered to the pot and is melted therein by suitable heatingappliances, such as gas burners or the like, which also serve tomaintain it in molten condition. In the operation of such devices, it isextremely important to prevent any great or Violent fluctuations in thetemperature of the molten mass, as these are apt to produceimperfectionsin the cast slug or type. One of the principal causes of suchfluctuations 'is the chilling effect involved in the delivery to the potof the solid metal, and it is therefore the chief object of my inventionto segregate as far as possible this cold metal from the molten mass.This I prferablyaccomplish by providing the pot with an interiorauxiliary pocket or chamber, into which the pig or other metal isintroduced from time totime as occasion demands. This pocketcommunicates by means of a restricted opening with the interior of thepot, and the heat of the surrounding molten mass is relied upon to meltthe metal gradually in the pocket, from which it passes slowly into thep0t,in this way minimizing the chilling effect upon thecontained mass.

In the accompanying drawing, I have shown my invention in preferred formand by way of example, and as applied to the casting mechanism of alinotype machine. However, it will be understood that many ariations andalterations may be made therein, and in its -mode of adaptation, whichwill still be comprised Within its My invention relates totypographical.

chines, such for instance as those-designed for the productionof type,dies, etc., instead of slugs or linotypes asherein presented'l Generallyspeaking, I desire it to be understood that i do not limit myself to anyspecific form or embodiment, except in so far as such limitations arespecified in the claims.

Referring to the drawing: F igure l is a perspective View of the pot,partly in section and broken away, having my invention applied thereto;and Fig. 2 is a top plan view thereof, partly broken away, on a reducedscale. 1 v

The pot A is provided in the usual manner with the outlet or mouth B,the pump or plunger O, the movable cover D, and the heater or gas burnerG. These parts may be of the usual or any well known construc- 'tion,and their specific form constitutes no part of my present invention.

According to my improvement, the pot is further provided with theinterior pocket or chamber E, preferably connected to one of the sidewalls thereof, and so located that it is immersed, partly or wholly,within the mass of molten metal, in such manner that its heat will becommunicated to the pocket and is availed of for the purpose of meltingthe solid pig H or other metal therein. The pocket E is open at its top,and communicates with the main portion of the pot by one or morerestricted openings or orifices F, sothat the metal as it is melted mayslowly and gradually pass therefrom into the surrounding mass and thusaugment it. It will be seen that in this way the chilling effect of thecold metal on the molten mass is minimized, and as a result thereof thatthe extent and violence of its fluctuations in temperature arematerially reduced.

As previously stated, my improvements have been shown only in preferredform and by way of example, and as applied to a specific style ofmachine. Obviously, many changes and modifications therein will suggestthemselves to those skilled in the art without departure from theirscope.

Having thus described my invention, its construction and mode ofoperation, what I claim and desire to secure by Letters Patent of theUnited States is as follows:

1. A casting pot having a main chamber for the molten metal and providedwith an auxiliary pocket or chamber to' contain a metal pig, the saidpocket being located wholly within the main chamber. and communicatingtherewith; whereby the entire surface of the pig will be subject tothe'influ'ence of the heat within the pot.

2. A casting pot having a main chamber for the molten metal and providedwith an auxiliary pocket or chamber to contain a metal pig, the saidpocket being located wholly within the mam chamber and open at its topand formed at its bottom with an opening communicating with saidchamber; whereby the pig will be subject to the melt-' ing influence ofthe heat in the upper part of the pot and the heat of the molten metal.in the lower part thereof.

3. A casting pot having a main chamber for the moltenmetal and formed onthe in 20 lower portion immersed within the mass of 25 molten metal inthe main chamber'and with its upper'lportion above the level of themolten-mass; whereby the pig w1ll be subject to the melting influence ofthe heat in the upper part of the pot and the heat of 30 the moltenmetal in the lower partthereof In testimony whereof I affix my signaturein presence of two witnesses.

WILLIAM MILN-ER WOGD.

